Patent US2720360A successfully refreshed from Google Patents.
Patent US2543447A successfully refreshed from Google Patents.
US2543447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balancing means for rotary structures
Assignee: Individual
•
Filing: 1949-03-02
•
Granted: 1951-02-27
•
Expires: 1969-03-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph Edgar Elrod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:34
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/32; F16F15/324; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/211; Y10T74/2114
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US486754A
Cited
US1305978A
Cited
US903096A
Cited
US1172949A
Cited
US1171172A
Cited
US1158712A
Cited
US1218689A
Cited
US1397348A
Cited
US1608207A
Cited
US1640216A
Cited
US1733893A
Cited
US2310357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |